<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>图片</title>
    <link rel="stylesheet" href="css/index.css"/>
</head>
<body>
<div id="bodys">
    <div id="nav">
        <div id="nav_main">
            <div id="nav_main_yuan"></div>
            <p id="nav_main_up"></p>
            <p id="nav_main_down"><a href="#">姓名</a> </p>
                <p id="nav_main_left"><a href="#">课程名</a></p>
                <p id="nav_main_left1"><a href="#">班级</a></p>
                <p id="nav_main_right"><a href="#">进入 ></a></p>
        </div>
        <div id="nav_main1">
            <div id="nav_main1_yuan"></div>
            <p id="nav_main1_up"></p>
            <p id="nav_main1_down"><a href="#">姓名</a> </p>
            <p id="nav_main1_left"><a href="#">课程名</a></p>
            <p id="nav_main1_left1"><a href="#">班级</a></p>
            <p id="nav_main1_right"><a href="#">进入 ></a></p>
        </div>
        <div id="nav_main2">
            <div id="nav_main2_yuan"></div>
            <p id="nav_main2_up"></p>
            <p id="nav_main2_down"><a href="#">姓名</a> </p>
            <p id="nav_main2_left"><a href="#">课程名</a></p>
            <p id="nav_main2_left1"><a href="#">班级</a></p>
            <p id="nav_main2_right"><a href="#">进入 ></a></p>
        </div>
        <div id="nav_main3">
            <div id="nav_main3_yuan"></div>
            <p id="nav_main3_up"></p>
            <p id="nav_main3_down"><a href="#">姓名</a> </p>
            <p id="nav_main3_left"><a href="#">课程名</a></p>
            <p id="nav_main3_left1"><a href="#">班级</a></p>
            <p id="nav_main3_right"><a href="#">进入 ></a></p>
        </div>
    </div>
</div>
</body>
</html>